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16#ifndef __AF_VSOCK_H__
17#define __AF_VSOCK_H__
18
19#include <linux/kernel.h>
20#include <linux/workqueue.h>
21#include <linux/vm_sockets.h>
22
23#include "vsock_addr.h"
24
25#define LAST_RESERVED_PORT 1023
26
27#define vsock_sk(__sk) ((struct vsock_sock *)__sk)
28#define sk_vsock(__vsk) (&(__vsk)->sk)
29
30struct vsock_sock {
31
32 struct sock sk;
33 struct sockaddr_vm local_addr;
34 struct sockaddr_vm remote_addr;
35
36 struct list_head bound_table;
37 struct list_head connected_table;
38
39
40
41 bool trusted;
42 bool cached_peer_allow_dgram;
43
44
45 u32 cached_peer;
46 const struct cred *owner;
47
48 long connect_timeout;
49
50 struct sock *listener;
51
52
53
54
55
56
57
58
59 struct list_head pending_links;
60 struct list_head accept_queue;
61 bool rejected;
62 struct delayed_work dwork;
63 u32 peer_shutdown;
64 bool sent_request;
65 bool ignore_connecting_rst;
66
67
68 void *trans;
69};
70
71s64 vsock_stream_has_data(struct vsock_sock *vsk);
72s64 vsock_stream_has_space(struct vsock_sock *vsk);
73void vsock_pending_work(struct work_struct *work);
74struct sock *__vsock_create(struct net *net,
75 struct socket *sock,
76 struct sock *parent,
77 gfp_t priority, unsigned short type);
78
79
80
81struct vsock_transport_recv_notify_data {
82 u64 data1;
83 u64 data2;
84 bool notify_on_block;
85};
86
87struct vsock_transport_send_notify_data {
88 u64 data1;
89 u64 data2;
90};
91
92struct vsock_transport {
93
94 int (*init)(struct vsock_sock *, struct vsock_sock *);
95 void (*destruct)(struct vsock_sock *);
96 void (*release)(struct vsock_sock *);
97
98
99 int (*connect)(struct vsock_sock *);
100
101
102 int (*dgram_bind)(struct vsock_sock *, struct sockaddr_vm *);
103 int (*dgram_dequeue)(struct kiocb *kiocb, struct vsock_sock *vsk,
104 struct msghdr *msg, size_t len, int flags);
105 int (*dgram_enqueue)(struct vsock_sock *, struct sockaddr_vm *,
106 struct msghdr *, size_t len);
107 bool (*dgram_allow)(u32 cid, u32 port);
108
109
110
111 ssize_t (*stream_dequeue)(struct vsock_sock *, struct msghdr *,
112 size_t len, int flags);
113 ssize_t (*stream_enqueue)(struct vsock_sock *, struct msghdr *,
114 size_t len);
115 s64 (*stream_has_data)(struct vsock_sock *);
116 s64 (*stream_has_space)(struct vsock_sock *);
117 u64 (*stream_rcvhiwat)(struct vsock_sock *);
118 bool (*stream_is_active)(struct vsock_sock *);
119 bool (*stream_allow)(u32 cid, u32 port);
120
121
122 int (*notify_poll_in)(struct vsock_sock *, size_t, bool *);
123 int (*notify_poll_out)(struct vsock_sock *, size_t, bool *);
124 int (*notify_recv_init)(struct vsock_sock *, size_t,
125 struct vsock_transport_recv_notify_data *);
126 int (*notify_recv_pre_block)(struct vsock_sock *, size_t,
127 struct vsock_transport_recv_notify_data *);
128 int (*notify_recv_pre_dequeue)(struct vsock_sock *, size_t,
129 struct vsock_transport_recv_notify_data *);
130 int (*notify_recv_post_dequeue)(struct vsock_sock *, size_t,
131 ssize_t, bool, struct vsock_transport_recv_notify_data *);
132 int (*notify_send_init)(struct vsock_sock *,
133 struct vsock_transport_send_notify_data *);
134 int (*notify_send_pre_block)(struct vsock_sock *,
135 struct vsock_transport_send_notify_data *);
136 int (*notify_send_pre_enqueue)(struct vsock_sock *,
137 struct vsock_transport_send_notify_data *);
138 int (*notify_send_post_enqueue)(struct vsock_sock *, ssize_t,
139 struct vsock_transport_send_notify_data *);
140
141
142 int (*shutdown)(struct vsock_sock *, int);
143
144
145 void (*set_buffer_size)(struct vsock_sock *, u64);
146 void (*set_min_buffer_size)(struct vsock_sock *, u64);
147 void (*set_max_buffer_size)(struct vsock_sock *, u64);
148 u64 (*get_buffer_size)(struct vsock_sock *);
149 u64 (*get_min_buffer_size)(struct vsock_sock *);
150 u64 (*get_max_buffer_size)(struct vsock_sock *);
151
152
153 u32 (*get_local_cid)(void);
154};
155
156
157
158int __vsock_core_init(const struct vsock_transport *t, struct module *owner);
159static inline int vsock_core_init(const struct vsock_transport *t)
160{
161 return __vsock_core_init(t, THIS_MODULE);
162}
163void vsock_core_exit(void);
164
165
166
167void vsock_release_pending(struct sock *pending);
168void vsock_add_pending(struct sock *listener, struct sock *pending);
169void vsock_remove_pending(struct sock *listener, struct sock *pending);
170void vsock_enqueue_accept(struct sock *listener, struct sock *connected);
171void vsock_insert_connected(struct vsock_sock *vsk);
172void vsock_remove_bound(struct vsock_sock *vsk);
173void vsock_remove_connected(struct vsock_sock *vsk);
174struct sock *vsock_find_bound_socket(struct sockaddr_vm *addr);
175struct sock *vsock_find_connected_socket(struct sockaddr_vm *src,
176 struct sockaddr_vm *dst);
177void vsock_for_each_connected_socket(void (*fn)(struct sock *sk));
178
179#endif
180